Missing Period

Smilee
So I've had PCOS for over 2 years now and I've gotten used to it. When I had health insurance I was on birth control and my periods were somewhat normal again 
But I've been off of the pill for about 2 years lol
And now my period has disappeared again 
I haven't had a period for about 5 months now 
And I can't go to the doctor until at least august when I can get on my college health insurance 
So my question for you ladies is what is the longest you have gone with no period?